Question

Hydrocarbons are compounds of carbon and hydrogen only. Hydrocarbons are classified as open chain, saturated(alkanes), unsaturated (alkenes and alkynes), cyclic (alicyclic) and aromatic based upon structure.

Alkanes show conformational isomerism due to free rotation along c-c Bond leading to staggered and eclipsed conformation of Ethane.

Staggered conformation is more stable.

Alkene show geometrical (Cis - Trans) isomerism. Benzene and benzenoid show aromatic character They follow Huckel rule, (4n+2)¡¡ electrons which must be localized.

Benzene is prepared by polymerization of ethyne and by heating sodium benzoate with soda lime.



A) Why is staggered form of Ethane more stable than eclipsed form?

B) Out of 1-butene and 2-butene, which shows geometrical isomerism?

C) Why is Cis-2-butene has high boiling point than trans-2-butene?

D) Why is Benzene aromatic?

E) Sodium benzoate on heating with soda lime gives benzene, name the reaction

Answer 1

Answer:

क्या सबजी है की अभी सक्रिय नहीं है क्या है ये सब लोग का है क्या है ये सब लोग का है क्या है ये सब लोग का है क्या